“Forrest Gump” star Tom Hanks once said that it “breaks every rule of moviemaking.”

It had no bad guy, was not structured in the typical three-act format and didn’t see the main character undergo dramatic change. The movie simply followed the adventures of a simpleton who somehow ended up lucking his way through history.

It will be interesting to see how audiences feel it holds up. “Forrest Gump” won Oscars for Best Picture, Best Actor for Hanks and Best Director for Robert Zemeckis, but in the two decades since it hit theaters, opinion seems to have turned against it. It’s now considered by many to be among the weakest Best Picture winners ever. (Especially rankling to some cinephiles is that it edged out “Pulp Fiction.”)

Regardless of how you feel about it, one of the film’s more memorable — and head-scratching — sequences is the detour in which Forrest decides to take up running.

Forrest is sitting on his porch one day when, “for no particular reason,” he decides to go for a “little run.”

Even before he made his infamous trek across the country (and back), Forrest was all about running.Everett Collection

That “little run” turns into a longer one. Then a longer one, still. And he just keeps on going.

In the end, his jog turns into a three-year, two-month, 14-day and 16-hour crisscross of the entire United States. (It only lasts about seven minutes in the movie, though.)

Gump runs through Varnville, SC, then across a tiny bridge where a sign reads “Mississippi Welcomes You.” (That’s actually near Beaufort, SC.)

He ends up in Santa Monica, then runs back across the country to the Marshall Point Lighthouse in Maine.

Also included in the montage is a bend along US Route 221 near Linville, NC, overlooking Grandfather Mountain, now called “Forrest Gump Curve.”

He later jogs through downtown Flagstaff in Arizona. When he gets to Utah’s Monument Valley, he decides to pack it in.

“I’m pretty tired. I think I’ll go home now,” Gump says.

Hanks himself probably didn’t get all that tired filming the sequence. His brother, Jim Hanks, served as his double on many of the wide shots.

The filmmakers had originally cast other doubles, but they had trouble aping Forrest’s distinctive way of running.